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A test charge of +12×10 to power of -6 C experiences a downward electrostatic force of...

A test charge of +12×10 to power of -6 C experiences a downward electrostatic force of 3N when place at a certain piunt in space. What are the magnitude and direction of the electric field at this point?

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Answer #1

The electric field is in the direction of force on a positive charge. We use equation of force on the charge in an electric field to find the required magnitude and direction as shown below

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